Innovate Gauge 52mm - Air/Fuel Ratio MTX-AL.Innovate MTX-AL Series gauges deliver patented DirectDigital wideband sensor control with 100 percent digital wideband air/fuel ratio technology. These microprocessor-driven gauges feature high performance and high-torque 270 degree stepper motors, superior needle holding force for high shock and vibration applications, plus Innovate MTs serial in/out. They come with Bosch LSU 4.9 wideband oxygen sensors and offer the ability to calibrate the O2 sensor for maximum accuracy. Innovate MTX-AL Series gauges also deliver style with interchangeable black and silver bezels.